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3 years ago

In two or more complete sentences, explain how to find the time it takes for a rocket following the path of the

Mathematics

1 answer:

Andrej [43]3 years ago

3 0

Answer:

After t = 4 the rocket will hit the ground.

Step-by-step explanation:

We are given a parametric equation as x = 3t² and y = - 4t + 16.

If we assume that the x is a measure of horizontal distance, y is the measure of vertical distance and t is the time of travel of the rocket, then by making y = 0, we will get the time to hit the ground.

Hence, - 4t + 16 = 0

⇒ t = 4

Therefore, after t = 4 the rocket will hit the ground. (Answer)

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under certain circumstances, a rumor spreads according to the where p(t) is the proportion of the population that knows the rumo

Gnesinka [82]

Answer:

p(t) = 0.8 when t = 7.38 hours

Step-by-step explanation:

3 0

3 years ago

An ectopic pregnancy is twice as likely to develop when the pregnant woman is a smoker as it iswhen she is a nonsmoker. If 32 pe

Dmitriy789 [7]

Answer:

48.48%

Step-by-step explanation:

Let's assume that there is a number N of women.

32% of these are smokers, then there are 0.32*N smokers

then 68% of these are non-smokers, then there are 0.68*N non-smokers.

Let's assume that the probability of having a ectopic pregnancy for a non-smoker is p (and the probability for a smoker will be 2*p)

Then the number of women with an ectopic pregnancy that are non-smokers is:

p*0.68*N

The number of women with an ectopic pregnancy that are smokers is:

2*p*0.32*N

Then the total number of women with an ectopic pregnancy will be:

p*0.68*N + 2*p*0.32*N

The percentage of women having an ectopic pregnancy that are smokers is equal to the quotient between the number of women with an ectopic pregnancy that are smokers and the total number of women with an ectopic pregnancy, all that times 100%.

The percentage is:

$P = \frac{2*p*0.32*N}{p*0.68*N + 2*p*0.32*N} *100\%$

Taking p and N as common factors, we get:

$P = \frac{2*p*0.32*N}{p*0.68*N + 2*p*0.32*N} *100\% = \frac{N*p}{N*p} \frac{2*0.32}{0.68 + 2*0.32} *100\%$

Then we get:

$\frac{2*0.32}{0.68 + 2*0.32} *100\% = 48.48\%$

8 0

3 years ago

If m1 = 65°, find each measure. Give your reasoning. <br><br> its example 2

BlackZzzverrR [31]

Answer:

m2=125°

m3=65°

m4=125°

m5=65°

m6=125°

m7=65°

m8=125°

i know the reason in French if you want

Step-by-step explanation:

m2=180-65=125°

m2 = m4 =125°

m3 =m1 =65°

m3= m5 =65°

m4 =m6=125°

m7=m5 =65°

m8=m6=125°

4 0

3 years ago

How much longer is 5/12 and 7 twelves

mr Goodwill [35]

2/12 or 1/6.
ask your teacher for help

6 0

3 years ago

What is the volume of this question?

Afina-wow [57]

I think it is 156 but I don't know for sure.

I hope this helps!

8 0

4 years ago